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HDCP
Input
The HDMI input negotiates and authenticates HDCP with the source device if the source
requires HDCP encryption. The authentication process is repeated whenever the stored
EDID is changed or updated, which is indicated by pulling HPD low.
HDCP support can be disabled for each input independently using the SIS command
HDCP Authorized Device
page 24).
Outputs
Each output is individually pre-authenticated and encrypted, in accordance with the
configured HDCP output mode using SIS commands (see
page 43) or PCS (see
If an output requires encryption but the connected sink device cannot be authenticated, that
output displays a green screen.
HDCP output modes
•
Follow input — Output is always authenticated but only encrypted when required by
input. HDMI authentication is continuous. DVI authentication occurs for a maximum of
10 seconds, then fails. This is the default mode.
•
Always encrypt output — Output is always authenticated and encrypted. HDMI
authentication is continuous. DVI authentication occurs for a maximum of 10 seconds,
then fails.
TMDS Output Format
The TMDS output format has three components:
•
Video format — either DVI or HDMI
•
Color space — RGB 4:4:4, YCbCr 4:2:2, or YUV 4:4:4
Quantization range — either Full (0-255) or Limited (16-235)
•
By default, the output format is automatically configured for Auto, which forces
RGB 4:4:4 Full, with the video format dependent on the source signal and sink capabilities.
This can be forced using SIS commands (see
Output Configuration
PCS (see
Color Bit Depth and Deep Color Support
There are two options for color bit depth and deep color support:
•
Automatic — By monitoring the EDID of the sink, the DTP2 T 212 transmitter
determines the best color depth that is supported by the sink.
•
Force 8‑bit
This can be disabled or changed using SIS commands (see
Depth
on page 42) or PCS (see
on page 43 or PCS (see
Output Configuration
on page 25).
Video Output Format
on page 25).
Output
Configuration).
Input Configuration
on
Output HDCP Mode
on page 43) or
Video Output Color Bit
DTP2 T 212 • Operation
on
20
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